Across
- 4. The state of metabolic depression in endotherms during cold periods.
- 7. A formally concluded agreement between two or more sovereign states.
- 8. An electrical circuit that converts alternating current () to direct current ().
- 9. The green pigment in plants essential for photosynthesis.
- 10. The fertile South American lowlands, primarily in Argentina and Uruguay.
Down
- 1. The term for a win in boxing when an opponent is unable to rise before a count of ten.
- 2. The toxic substance secreted by a snake or spider.
- 3. The former trade agreement between the, Canada, and Mexico.
- 5. A passive electrical component that stores energy in a magnetic field.
- 6. The term for a tree that sheds its leaves annually.